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Cosmetic Ingredients & Bases | The Botanical | New Directions Aromatics

Cosmetic Ingredients & Bases

Oils and butters are only part of a formula. The ingredients here are the ones that make it work: emulsifiers that keep oil and water together, surfactants that clean without stripping, solubilisers that disperse fragrance into a water-based product, thickeners that set viscosity, and preservatives that keep the whole thing stable to the end of its shelf life.

This section also covers ready-made bases — lotion, soap, lip balm, bath butter — for anyone who'd rather customise a tested formula than build one from scratch. Each profile covers what the ingredient does, how much to use, and where it belongs in the process.

Emulsifiers, Thickeners & Solubilisers

A GUIDE TO CETYL ALCOHOL: A SKIN-FRIENDLY, MULTI-PURPOSE COSMETIC INGREDIENT

Cetyl Alcohol is often mistaken for the drying kind of alcohol, but it's a fatty alcohol derived from coconut or palm oil with hydrating, conditioning, and softening properties. Named from the Latin for "whale oil," it works as an emulsifier, emollient, thickener, and opacifier. Learn how it stabilizes oil and water for a smooth glide, plus application guidance and recommended dosages across shampoos, makeup, moisturizers, and cleansers.

ALL ABOUT GLYCERYL STEARATE SE

Glyceryl Stearate SE is a self-emulsifying, plant-derived ingredient that emulsifies, thickens, and moisturizes in a single addition. Learn how its glycerol constituent forms a barrier that slows water loss, how it stabilizes pH and extends shelf life, and how it works as an opacifier to boost pigment appearance and create a creamier texture. Includes application guidance and recommended dosages across shampoos, makeup, moisturizers, and cleansers.

ALL ABOUT GUAR GUM

Guar Gum is a natural polysaccharide from the Indian guar plant — its name derives from the Sanskrit for "food for cows." Learn why it has an advantage over other thickeners: it hydrates in water at any temperature without prior heating, and only tiny amounts are needed. Covers its functions as emulsifier, stabilizer, and conditioner, the proper hydration method, ideal pH range, and recommended usage rates.

 

ALL ABOUT OLIVE SQUALANE: LUXURIOUS COSMETICS FROM NATURAL OLIVES

Human sebum is roughly 12% squalene, and production declines from our twenties onward — which is what makes Olive Squalane so valuable. Learn the difference between squalene and squalane, why hydrogenation is necessary for shelf stability, and how the industry moved away from shark liver oil toward this sustainable, cruelty-free alternative. Also covers how it's actually derived from olive refining by-products, and its appeal to formulators.

ALL ABOUT PEG 40 HYDROGENATED CASTOR OIL

PEG 40 Hydrogenated Castor Oil is soluble in both water and oil, which is what makes it such a useful solubilizer, emulsifier, and surfactant in oil-in-water formulations. Learn how its foam-enhancing properties suit liquid cleansers, how its occlusive action creates a moisture barrier, and the practical blending method — including the suggested 3:1 oil-phase ratio and how to correct a cloudy formula. Includes usage rates.

ALL ABOUT SOLUBILIZER (POLYSORBATE 20)

Polysorbate 20 solves a common formulating problem: keeping essential and fragrance oils blended into water-based products instead of separating out. Learn how it's made from sorbitol, how it functions as solubilizer, dispersant, anti-static agent, thickener, and viscosity modifier, and the practical 1:1 blending method for combining it with scent before adding to a base. Includes product applications and recommended usage rates.

ALL ABOUT STEARIC ACID

Stearic Acid is a long-chain saturated fatty acid and the main constituent of both cocoa and shea butter. Its name comes from the Greek for "tallow," though NDA's version is derived from palm oil. Learn how it works as a stabilizer, thickener, and softener in emulsions, how it hardens candles and soap bars while building a velvety lather, and how its occlusive properties help skin retain moisture.

Surfactants & Cleansing Agents

ALL ABOUT COCO GLUCOSIDE

Coco Glucoside is a plant-derived surfactant made by reacting glucose with coconut-derived fatty alcohols — gentle enough for sensitive and baby skin, yet an effective cleanser with notably stable foam. Learn how its conditioning and emulsifying properties lift grease without stripping natural oils, why it's compatible with all other surfactants as a co-surfactant, and the recommended usage rates across face washes, shower gels, bubble baths, and shampoos.

ALL ABOUT LOOFAH – A NATURAL EXFOLIANT

Loofah is the dried fruit of a plant in the cucumber family — edible when young, fibrous and sponge-like when mature. Ground into powder, it becomes a gentle exfoliant fine enough for sensitive skin, and its absorbency actually enhances lather in soap. Learn how it functions in creams, masks, scrubs, and soaps, how much to add per pound in cold process and melt-and-pour, and recommended usage rates.

BENEFITS & APPLICATIONS OF “BABY FOAM” (SODIUM COCOYL ISETHIONATE)

Known as "Baby Foam" for its mildness, Sodium Cocoyl Isethionate is a coconut-derived surfactant that produces a rich, velvety lather without dehydrating the skin — and it performs equally well in hard and soft water. Learn how to work with it, including crushing the chips before slow melting and using a high shear blender on the surfactant phase to control foaming, plus recommended usage rates.

MAKING ALL-NATURAL SHAMPOOS: A BEGINNER’S GUIDE

Herbal Oils and Essential Oils are easily confused, but the extraction methods set them apart. Essential Oils are the distilled essence of a plant, highly concentrated and used sparingly. Herbal Oils are made by infusing dried or fresh herbs in a carrier oil with gentle heat — far less concentrated, and a gentler option for those who react to essential oils. Learn their benefits and the formulations they suit.

TOP 10 BENEFITS OF NATURAL SHAMPOOS AND CONDITIONERS

What actually makes a shampoo base "natural"? This guide walks through every ingredient in NDA's shampoo and conditioner bases, from Coco Glucoside and Sodium Cocoyl Glutamate to Shea Butter and Xanthan Gum, explaining what each does. It then covers ten benefits of switching, including why less lather isn't a sign of poor cleansing, why washing twice helps, and how pH balance protects the hair cuticle.

Preservatives & Antioxidants

ALL ABOUT CITRIC ACID IN COSMETICS & PERSONAL CARE

Citric Acid does far more in a formulation than create bath bomb fizz. As an AHA it exfoliates and brightens; as a chelator it binds trace metal ions to boost preservative efficacy and prevent soap scum; and as a pH adjuster it protects product stability, colour, and viscosity. Learn its role across skincare, shampoos, and bath products, plus practical guidance on making a 50% solution and the standard bath bomb ratio.

ALL ABOUT LIQUID VITAMIN E

Liquid Vitamin E is thick and oil-soluble, which makes it best suited to overnight use — a natural substitute for night cream. This guide covers its cosmetic and medicinal properties, then puts them to work with a full set of recipes: a brightening Vitamin C night serum, enriched shampoo, hair masks, a hot oil treatment, pre-shower body oil, stretch mark blend, makeup remover, and soothing bath and sunburn blends.

PRESERVATIVE POWERS OF GRAPEFRUIT SEED EXTRACT

Grapefruit Seed Extract draws on flavonoids, Vitamin C, Vitamin E, and citric acid to deliver antioxidant, antibacterial, antifungal, and antimicrobial activity — making it a popular natural preservative across cosmetics and home cleaning products. This guide covers recommended usage rates, water-phase formulation notes, why GSE won't work in anhydrous blends, and an important caution about adulterated commercial supply and why sourcing matters.

ROSEMARY ANTIOXIDANT CO2 EXTRACT

Rosemary Antioxidant delivers antioxidant protection that outperforms mixed tocopherols, guarding natural oil blends against rancidity without heavy metals, solvents, or inorganic salts. Learn about its Carnosic Acid content, its solubility across vegetable oils, its stability above 200°C, and how it slows oxidation to extend the shelf life of handmade creams and lotions — while offering its own moisturizing and anti-inflammatory skincare benefits.

Specialty Additives

10 COOLING AND REFRESHING USES FOR MENTHOL CRYSTALS

Menthol Crystals activate the body's cold receptors, delivering a cooling sensation that soothes itching, congestion, aches, and tired muscles. This guide covers their cosmetic, hair, and medicinal properties, then puts them to work with recipes for steam inhalation, an aromatherapy inhaler, bath soak, cooling exfoliating scrub, lotion bars, hair oil, classic vapor rub, foot soak, and a muscle salve — plus essential safety cautions on handling and dilution.

A COMPLETE GUIDE TO VEGETABLE GLYCERINE FOR SKIN AND HAIR

Vegetable Glycerine is a humectant that draws moisture into the skin and holds it there, softening and smoothing without clogging pores — and it helps the skin absorb other active ingredients more effectively. Learn how it fills the look of fine lines, regulates oil production, keeps skin and scalp clear of acne-causing bacteria, and works medicinally to soothe cuts, burns, hives, eczema, and psoriasis. Includes a summary of key properties.

ALL ABOUT ARROWROOT POWDER: AN ALL-NATURAL TALC SUBSTITUTE

In formulations, arrowroot powder works as an absorbent, thickener, mattifier, deodorizer, and texture enhancer. Learn why it's the preferred substitute for talc and cornstarch, how it behaves in emulsions, dry powders, and anhydrous blends, and what its mineral content offers sensitive skin.tle alternative to talc or cornstarch, helping to thicken, mattify, bind, and absorb moisture.

ALL ABOUT D-LIMONENE

D-Limonene, also called Citrus Terpenes, is the main constituent of cold-pressed citrus peel oils and takes its name from Citrus limon. Learn how it functions as a fragrance agent, degumming agent, and powerful natural cleaner that lifts grease, tar, wax, gum, and adhesive residue — a greener alternative to chlorine and petroleum solvents. Includes guidance on undiluted use, surfaces to avoid, and recommended dosages.

ALL ABOUT SILK RAW MATERIALS

Silk contains the same amino acids naturally found on the skin's surface, which explains its compatibility in cosmetics. Learn about the two key proteins, sericin and fibroin, and what each contributes to healing, collagen, and elasticity. The guide then compares Silk Amino Acids and Silk Powder — how their very different particle sizes determine whether the additive penetrates deeply or sits on the surface for smoothness and light-reflecting radiance.

AROMA CHEMICALS – USES AND APPLICATIONS

Aroma chemicals — whether isolated from natural sources or synthetically produced — give perfumers an almost limitless palette, including scents that don't exist in nature. Learn how they add fragrance to soaps, cosmetics, shampoos, lotions, and cleaning products without compromising a formula's original benefits. Includes DIY recipes for an uplifting room spray and a mood-balancing natural perfume using Linalyl Acetate alongside familiar essential oils.

PROTECTIVE & SOOTHING BENEFITS OF ZINC OXIDE

Zinc Oxide sits on the skin's surface rather than absorbing, forming a protective barrier against UV radiation and environmental irritants. Its antiseptic and astringent action helps prevent bacterial infection and speeds healing of minor burns and wounds. Learn how it functions as emollient, sunscreen, thickener, and colorant across mineral makeup, sunscreens, barrier creams, anti-dandruff shampoos, and baby care — plus recommended usage rates.

GLYCERIN SOAP: BENEFITS, DRAWBACKS AND TIPS

Glycerin was discovered by accident in 1779 and has been central to soap making since the mid-1800s. As a humectant it draws moisture in without clogging pores, making it gentle enough for dry and sensitive skin. This guide weighs the advantages against real drawbacks — less lather, higher cost, and bars that dissolve in a wet dish — and compares cold process soap making with the safer, faster melt-and-pour approach.

SAFE BEAUTY: COSMETIC INGREDIENTS TO AVOID

Cosmetic ingredient labels don't always tell the whole story. This article traces the use of harmful ingredients from ancient lead face powders to today's phthalates, parabens, formaldehyde-releasers, and coal tar dyes, explaining how bioaccumulation works and why layering products matters. It also examines the real limits of FDA and Health Canada oversight — including why "natural," "organic," and "hypoallergenic" claims aren't legally defined.

WHAT ARE EXFOLIANTS – BENEFITS AND USES

Exfoliation has a long history — Egyptian royalty used wine for its tartaric acid, and Cleopatra reportedly bathed in lactic acid. This guide covers physical versus chemical exfoliants, including AHAs and BHAs, and explains which type suits sensitive, oily, normal, or combination skin, plus when to avoid exfoliating altogether. It also details the benefits and finishes with two DIY body scrub recipes.

Ready-Made Bases

LUXURIOUS USES OF FOAMING BATH BUTTER

Foaming Bath Butter (Crystal OPC) whips cold into whipped soaps, shaving creams, body polishes, and soap frosting — no heating required. Sulfate-free, paraben-free, and pH balanced at 5.5, it's mild enough for facial cleansers. This guide covers its benefits, the equipment you'll need, and full instructions for both the no-heat whipping method and the melt-and-pour approach, plus additive limits and practical tips.

NDA'S LIP BALM BASE

A ready-to-use lip balm base takes much of the work out of DIY formulating. NDA's melt-and-pour base combines natural emollients and antioxidants to hydrate and protect without the waxy feel or chemical taste of many alternatives. Learn its seven key advantages — including how one kilogram fills roughly 200 tubes, and how the same base adapts to solid perfumes, foot salves, body butters, lotion bars, and cuticle sticks.

ALL ABOUT MOISTURIZING COSMETIC BASES

Moisturizing cosmetic bases let you formulate customized creams, lotions, and massage products without building from scratch. This guide covers what can be added and — importantly — the 1-2% total limit, since exceeding it can destabilize the base and compromise viscosity, smoothness, and absorption. It then works through each additive category, from essential and carrier oils to floral waters, micas, exfoliants, butters, extracts, and waxes.

MELT AND POUR SOAP BASES: A COMPLETE GUIDE

Melt and pour soap bases are already saponified, so there's no lye to handle and no curing period — bars are ready as soon as they leave the mould. This guide explains how the bases are made and named, addresses whether melt and pour counts as "true" soap, and covers why their higher glycerin content makes them gentler and less drying than cold process alternatives.